PatrickĀ Kosterman
Director & Founder at Efty
Valencia, Valencian Community, Spain
Summary
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Top SchoolPatrick Kosterman is a founder and technology leader with over 20 years as a full-stack developer and nearly a decade running his own consultancy focused on process engineering, system integration, and scalable cloud applications. He builds secure, stateless middleware and serverless solutions using Golang, Docker, Kubernetes, Cloud Run and Lambda across AWS, GCP and Azure, and has product-led engineering experience as CTO at Efty and VP Engineering at PassKit. Known for hunting down inefficiencies, he translates complex operational pain points into automated, instrumented workflows that measurably improve throughput for nonprofits and the F&B sector. Based in Valencia, he combines hands-on architecture and implementation with client-facing advisory work, often integrating digital wallets like Apple and Google Wallet into enterprise solutions. Outside of engineering he channels creativity into travel, cooking and performing as a guitarist and singer, a trait that informs his pragmatic yet inventive approach to problem solving.
9 years of coding experience
14 years of employment as a software developer
Bachelor of Computer Engineering IT, Bachelor of Computer Engineering IT at Fontys University of Applied Sciences
English, Dutch, German, Spanish
Stackoverflow
1reputation
0reached
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0questions
Github Skills (15)
apple-wallet10
google-pay10
google-wallet9
passkit9
sdk7
golang6
grpc6
go5
csv5
command-line-tool5
csharp3
php3
lambda3
nodejs3
aws-sdk2
Programming languages (4)
Github contributions (5)
PassKit/passkit-golang-grpc-quickstart
Sep 2019 - Aug 2020
Golang Quickstart to create, distribute, analyse and manage your Digital Coupons / Membership / Boarding Passes for Apple Wallet and Google Pay
Contributions:1 release, 2 commits, 10 pushes in 10 months
apple-walletgolanggoogle-payapple-wallet-supportcoupons
PassKit/smart-pass-link-from-csv-generator
Feb 2020 - Jun 2020
Easy to use command-line tool written in Golang to generate encrypted PassKit SmartPass Links from a CSV.
Contributions:3 releases, 6 commits, 4 PRs in 4 months
command-line-toolcsvgolangpasskit
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